Improvement in coffee-mills



0. J; RANGE.

COFFEE-MILL.

Patentecl April 4, 1876.

UNITED STATES PATENT OEEroE.

OTIS J. RANGE, OF MERIDEN, CONNECTICUT, ASSIGNOR TO CHARLES PARKER, OFSAME, PLACE.

IMPROVEMENT IN COFFEE-MILLS.

Specification forming part of Letters Patent No. 175,753, dated April 4,1876 application filed March 9, 1876. i

To all whom it may concern:

Be it known that I, OTIS J. RANGE, of Meriden, in the county of NewHaven and State of Connecticut, have inventedanew Improvement in CoffeeMills; and I do hereby -declare the following, when taken in connectionwith the accompanying drawings, and the letters of reference markedthereon, to be a full, clear, and exact description of the same, andwhich said drawings constitute part of this specification, and representin Figure 1, plan view Fig. 2, front view; Fig. 3, vertical centralsection Fig. 4, perspective view of the top of the hopper and supportingbar.

This invention relates to an improvement in that class of cofl'eemillsknown as boxinillsthat is to say, mills in which the runner-spindle ismounted vertically over a box to receive the product of grinding.

In the usual construction of this class of mills the hopper has beenarranged above the top of the box.

The object of this invention is to sink the hopper flush with the top ofthe box, whereby it may easily be titted with a cover to close the topof the hopper; andit consists, first, in a central bar across the top ofthe hopper, constructed with a bearing to support the spindle, andfitted so that, by placing it in position, it centrally locates thespindle; also in the construction of said bar, so that in the adjustmentof the runner it cannot be brought into contact with the shell.

A is the box of usual form, of which B is the top. 0 is the hopper,constructed with a flange, and set into the top flush with its surface.

I ()n diametrically opposite sides of the hopper a notch, 60, is formedat the upper edge, and into these notches a bar, I), is set. This bar I)is constructed with a shoulder, d, at each end, distant from each otherthe internal diameter of the hopper, or so as to takea hearing to locatethe bar longitudinally, while the extension of the bar into the notchesof the hopper will locate it transversely. In the center of this bar abearing, E, is formed for the runner-spindle F. The construction of theend of the bar and the seats for it in the hopper therefore positivelylocate the hearing for the spindle in its necessary central position,and forms the only support necessary for the spindle, thereby dispensingwith the usual bearing below the runner, being suspended entirely by thebearing in the bar.

The crank G is applied to the runner-spindle in the usual manner.Beneath the crank a lug, 6, projects radially fromthe shaft, looseaxially, but so as to revolve with the shaft, and-through the crank anadj usting-screw, H, is arranged to bear upon the lug e hence, byturning the screw H, the runner L is raised or lowered accordingly, andso as to set it nearer to or farther from the shell P for iiner orcoarser grinding.

To prevent contact of the runner with the shell, a shoulder, f, isformed on the runnerspindle in such relative position to a correspondingpart. a, of the bearing E, that the said shoulderf will strike at abefore the runner will come in contact with the shell. This constructionenables the arrangement of a divided cover, R, each pivoted to the boxat r so as to be turned away, as indicated in broken lines, Fig. 1.

I claim- 1. The combination ot'the hopper 0,0011- structed with seats adiametrically opposite each other, the bar D with shoulders 61, thebearing E in the said bar to locate and support the runner-spindle,substantially as described.

2. The combination of the hopper and shell of a cofl'ee-mill, the bar D,constructed with the bearing E for the support of the runnerspindle, therunner spindle F, constructed with a shoulder, f, a correspondingbearing, a, on the bar, and the adjusting-screw H, with the lug e,substantially as and for the purpose described.

0. J. RANGE.

' Witnesses:

GEORGE O. MERRIAM, RALPH A. ,PALMER.

